2. burning of lime stone to give calcium oxide
is:
a) oxidation process b) redox process
c) disproportionation d) decomposition
the vidation state of

d) decomposition

Explanation:

Burning of limestone is a decompostion reaction. In a decomposition reaction, there is formation of two or more products from a single reactant. The main driving force of such a reaction is the high positive heat of formation of the compound.

The reaction is stated below:

          CaCO₃   →   CaO + CO₂

Here, limestone is cracked into two products, CaO and CO₂

what is the volume occupied by 40 grams of argon gas (ar) at standard conditions? what volume, in liters, is occupied by 1.5 x 1023